Changeset 46ec2c06 in mainline for libc/generic/as.c

Timestamp:

2006-05-11T16:08:50Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

7981e3cc

Parents:

20a9b85

Message:

SYS_AS_AREA_DESTROY support for uspace.

Formatting fixes in libpci.

File:

• libc/generic/as.c (modified) (3 diffs)

libc/generic/as.c

@@ -52 +52 @@
  * @param flags Currently unused.
  *
- * @return address on success, (void *) -1 otherwise.
+ * @return Zero on success or a code from @ref errno.h on failure.
  */
-void *as_area_resize(void *address, size_t size, int flags)
+int as_area_resize(void *address, size_t size, int flags)
 {
-        return (void *) __SYSCALL3(SYS_AS_AREA_RESIZE, (sysarg_t ) address, (sysarg_t) size, (sysarg_t) flags);
+        return __SYSCALL3(SYS_AS_AREA_RESIZE, (sysarg_t ) address, (sysarg_t) size, (sysarg_t) flags);
+}
+
+/** Destroy address space area.
+ *
+ * @param address Virtual address pointing into the address space area being destroyed.
+ *
+ * @return Zero on success or a code from @ref errno.h on failure.
+ */
+int as_area_destroy(void *address)
+{
+        return __SYSCALL1(SYS_AS_AREA_DESTROY, (sysarg_t ) address);
 }
 
@@ -111 +122 @@
 void *sbrk(ssize_t incr)
 {
+        int rc;
         void *res;
         /* Check for invalid values */
@@ -122 +134 @@
                 return NULL;
 
-        res = as_area_resize(&_heap, heapsize + incr,0);
-        if (!res)
+        rc = as_area_resize(&_heap, heapsize + incr,0);
+        if (rc != 0)
                 return NULL;